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Your best bet is to have a local contractor coome out and check your system. You could have a burnt out strip heater, or one shorting to ground.

At 20 years, your heatpump has done well, it might be time to buy a new more efficient one.
Also, consider adding insulation, and maybe window improvements, done first.
Then a heat load done to properly size your new heatpump, to save money on both your heat, and cooling bill.

That's a lotta KWH

Are you measuring 200 kwh per day??? That is a spectacularly high usage, at our local rates that be $600/month. Where is your home? What kind of heating system do you have, is it a heatpump, electric resistance heating, or what?

There might be something grossly wrong which can take care of much of that problem. I would call a pro to look it over, ASAP.